a movement, originating in the Lutheran Church in Germany in the 17th century, that stressed personal piety over religious formality and orthodoxy.

the principles and practices of the Pietists.

( lowercase ) intensity of religious devotion or feeling.

( lowercase ) exaggeration or affectation of piety.

adjective

devotional , devout , godly , pietistical , pious , prayerful , religious , saintly